Not a messenger, but I routinely move through CC Philly traffic. I get it at least once every two months. Mostly just small stuff so far (I am crossing fingers as I type). I got doored a month ago, but luckily I wasn't moving fast. The pedal came around a ripped up my calf and ankle. The guy who did it, cowered in his van and locked his door. Wouldn't even say sorry. I just got up, straightened out my bars, and rode off. The week before that I got squeezed into trolley tracks by a minivan-mom on the phone. I went down, but saved myself. Like NYCBM I alwys wear a helmet, no matter how *uncool* it is.